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stem wind and pin set
18''', Dm= 39.8mm, Do= 40.65mm
f = 18000 A/h
Balance staff U1057 / U956
(riveting collar 1.30 / 1.35mm)
1.70 x 0.60 / 0.26mm
Comments about the data
open face calibre
bimetallic screw balance with 4 adjustment screws
very early two-section regulator for coarse and fine adjustment (Fig.3)
18.69N(P): pin set, sub second
18.69N: set lever, sub second
18.69N(SC): set lever, sweep second
(all only stamped as 18.69N)
Example, year: signature; shock device
1912: 2836283, B&Co*** (Baume & Co., later Baume & Mercier), Swiss Made, 15 Jewels - 2836283, B&Co***, Longines
Not for Sale!
The movements presented in this caliber finder are not for sale. This is only a data sheet for identification and evaluation of the movement calibre, as well as for approximate dating.
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